South Korea and China have agreed to work swiftly to get their relations back on track following a yearlong standoff over the deployment of a controversial U.S. anti-missile system in South Korea.

The installation of the U.S. Terminal High Altitude Area Defense (THAAD) system had angered China and spilled over into trade, hurting South Korean business interests in the country.

China believed the system's powerful radar could be used to look inside its territory. South Korea and the United States have repeatedly said THAAD only serves to defend against the growing missile threat from North Korea.